[lttng-dev] Tracing a userspace app from startup

[Milian Wolff]

On Mittwoch, 15. Mai 2019 12:16:40 CEST Jones, Tim wrote:
> Hi,
> 
> I've been attempting to use LTTng to trace some apps but need to trace from
> their startup to shutdown. Is this possible with LTTng?
> 
> For example, I'd like to be able to run something along the lines of this:
> 
> lttng start -- <command> <args>
> 
> I've searched the docs and Google, but I can't find anything regarding this
> way of using LTTng!?

I asked this myself recently. Sadly, it's not supported. For now I'm using 
this script myself:

https://github.com/milianw/shell-helpers/blob/master/run_lttng_trace.sh

You may want to enable events explicitly, instead of enabling all of them. 
These traces can become quite large.

Cheers

-- 
Milian Wolff | milian.wolff at kdab.com | Senior Software Engineer
KDAB (Deutschland) GmbH, a KDAB Group company
Tel: +49-30-521325470
KDAB - The Qt, C++ and OpenGL Experts
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